Door check



May 31, 1960 L. B. KLINGLER DOOR CHECK Filed Oct. 22, 1957 By w Lawrm B. /(/1' INVENTO ATTORNEY Unimd tates Patent DOOR CHECK Lawrence B. Klingler, 620 SW. 46th Ave., Miami, Fla.

Filed Oct. 22, 1957, Ser. No. 691,642

Claims. (Cl. 16-83) This invention relates to door checks, and more particularly, to a door check of the type provided with improved and novel means for effectively preventing the forcible closing or slamming of coursures.

Door checks of various constructions have been employed, heretofore, for cushioning the impact following the forcible closing or slamming of doors. These door checks, however, are primarily intended to cushion the impact of the closing door -rather than to provide a positive check so as to completely stop the door at a partially open position and then permit the door to move slowly to its closed position. Also, most of the door checks of the prior art have been employing springs for their operation, which springs are not reliable for they usually lose their springiness during continuous use thereby failing to function properly. Also, springs are susceptible to corrosion, which causes an early failure thereof.

It is therefore the main purpose of the present invention to provide a door check of simple construction, employing the least number of movable parts thereby eliminating the possibility of failure during operation and which door check provides a positive check and is efli- =cient and reliable in operation.

It is further the purpose of the present invention to provide a door check in which the use of springs or any other resilient elements is eliminated, and which door check is arranged to effectively stop temporarily forcible .swinging of a door and thereafter permit the door to close slowly thereby preventing the door from being .slammed.

A door check constructed in accordance with the present invention comprises a pivoted buffer arm for mounting .on a door frame, a casing for mounting on a door, a stop member on said casing for engaging said arm to momentarily prevent closing of the .door, and a pivoted member on said casing adapted to cause downward movement of said arm to an inactive position.

These and other features of the present invention are described in detail below in connection with the accompanying drawing, wherein like numerals designate like parts, and in which;

Figure 1 is an isomertic view of a door check embodying the present invention mounted on a door and -door jamb shown broken away, the door being shown in 1 partly open position with respect to the door jamb;

Figure 2 is a top plan view, on a smaller scale, of the door check mounted on the door and door jamb;

Figure 3 is a vertical section, on an enlarged scale, taken substantially on line 33 of Figure 1, showing the approximate position of the buifer arm and flipper before engagement;

Figure 4 is a vertical section similar to Figure 3, but :showing the buffer arm in an operative position in en- .gagement with a stop member; and

Figure 5 is a vertical section similar to Figure 3, but showing the flipper engaging the bufler arm which is pointed downwardly so as to move to an inoperative position.

2,938,226 Patented May 31, 196Q ice Referring in detail to the drawing, the illustrated embodiment of the door check of the present invention is indicated generally by the reference numeral 10, and as shown, comprises a casing 12 mounted on a door 14 and a buffer or check arm member 16 mounted on a door jarnb or frame 18 and normally extending in a horizontal position. The buifer arm 16 is mounted on the door jamb 18 by a bracket 20 having a base plate 22 adapted to be attached to the door jamb 18 as by screws 24. Extending at right angles to the bracket base plate 22, a supporting plate 26, adapted to be disposed vertically when the bracket 20 is mounted on the door jamb 18, is formed with a slot 28 through which extends the bufier arm 16. The buffer arm 16 is pivotally mounted on a pin 30 extending horizontally across said slot when in place and threadedly engaging the supporting plate 26, as shown in Figures 1 and 2. The front end 32 of the buffer arm 16 is tapered and slightly curved at the upper side thereof, as indicated at 34, for a purpose as hereinafter described. The other or rear end 36 of the check arm 16 is formed with a wide flat portion 38 for acting as a balancing weight to cause the butter 16 to assume its normal horizontal position. A screw 40 may also be provided on plate 26 for adjusting the arm 16 in its horizontal position.

Mounted on the casing 12 for pivotal movement, a flipper plate, as indicated generally at 42, is pivoted on a pin 44 extending horizontally in the casing member 12, The flipper plate 42 has an angled upper portion 46 abutting a weight block 48 resting thereon and adapted to balance the flipper 42 in its normal extended position as shown in Figure 3. A cover plate 50 is provided for enclosing and retaining the weight 48 in place, which cover plate 56 is secured to side plates 52 by the pivot pin 44, or in any suitable manner. The side plates 52 extend at right angles from a base plate 54 adapted to be mounted on the door as by screws 56, as shown in Figure 3.

A lower portion 58 of the flipper plate member 44 is slightly curved outwardly forming an outer concave surface and terminates in angled lower edge portion 60 adapted to engage the butter arm 16 at its front end along the upper tapered or curved side 34. Mounted below the flipper 42, as by Welding, there is a block member 62 having a horizontally disposed upper side 64 and an inwardly inclined or sloping front side 66. The block member 62 is adapted to act as a stop for the buffer arm 16 which is adaptedto engage or abut the upper side 64 when in operative position, as shown in Figure 4. The block member 62 is mounted at a distance below the lower edge portion 60 of the flipper 42 for permitting the buffer arm 16 to extend between the flipper 42 and the stop member 62.

In operation of the door check 16 to prevent slamming or forceful closing of the door 14, the buflEer arm 16 extending from the door frame 18 in its substantially horizontal normal position, as shown in Figure 1, will, as the door 14 swings toward its closed position with respect to the door frame 18, hit the flipper plate portion 58 at about the center thereof. The flipper 42 by the impact of the buifer arm 16, is then swung from its normal extended position inwardly in the casing 12 by overcoming the weight 48 which is raised by the flipper upper portion 46. .The front tapered end 32 of the buifer arm 16 is then slideably guided downwardly along the lower curved flipper portion 58 until it reaches the upper side 64 of the stop member 62 upon which it will rest, as shown in Figure 4, thereby preventing the door 14 from closing. In this position, the tapered front end 32 of the arm 16 also engages the lower edge portion 60 of the flipper 42.

As the door 14 backs up from the impact of the engagement with the buffer arm 16, the buffer arm 16, as the casing 12 is drawn away therefrom, will start to automatically move upwardly. In the meantime, the fiipper 42 will, as it is released from its inward position by the arm 16, as shown in Figure 4, automatically assume its extended normal position while engaging the upper tapered side 34'of the arm 16 by its lower edge portion 60 and thereby will prevent the arm 16 from swinging back to its normal horizontal position.

As shown in Figure 5, the arm 16 is then held momentarily in a downwardly inclined position by the flipper 42 until the door 14 begins again to swing toward the door jamb 18 to be finally closed. This closing movement of the door will force the arm 16 to engage the front wall 66 of the stop member 62 and to slide downwardly along the front wall 66 to an inoperative position. whereby the door 14 being now unobstructed is permitted to close;

The present invention has been described in detail above for purposes of illustration only, and is not in tended to be limited by this description or otherwise, except as defined in the appended claims.

What I claim is:

l. A door check comprising a casing for mounting on a door, a swinging member mounted on a pivot extending horizontally in said casing for swinging inwardly of said casing from a normal outwardly extending position, bah ancing means engaging said swinging member for holding the same in said normal position, a stop member mounted on said casing and having a substantially horizontal upper wall and an inwardly inclined front wall, a bracket for mounting on a door frame, an arm pivotally mounted on said bracket and extending forwardly therefrom, means for holding said arm in a horizontal normal position, said arm adapted to be depressed by said swinging member to contact said upper wall of said stop member for stopping movement of the door during forcible closing of the door, said swinging member adapted tto engage said arm for preventing upward movement of said arm during rebounding of the door, whereby said arm slides along said inclined wall of said stop member upon re-engage able therewith to a downward inactive position thereby permitting closing of the door.

2. A door check comprising a support for mounting on a door frame, a check member pivotally mounted on said support for swinging downwardly from a normal laterally extending position, means on one end of said check member for moving said check member to said normal position, said check member having a downwardly sloping front end, a casing for mounting on a door, a flipper'pivotally mounted on said casing, said ilipper having an outwardly inclined lower portion for bolding said sloping front end after depression of said check member by contact with said flipper during forcible closing of the door and restricting upward movement of said check member upon engagement therewith during rebounding of the door, weight means engaging said flip per at an upper end portion thereof for moving said flipper to an active position, and a stop member for engaging said check member to stop forcible closing movement of the door, said stop member having a front wall for causing said check member to move to an inactive downwardly extending position when held depressed at sdaid sloping front end, thereby permitting closing of the oor.

3. A door check comprising a pivoted arm for mounting on a door frame for engaging a door, means on said arm for normally maintaining said arm in a substantially horizontal position, thefront end of said arm haw ing a tapered upper side, a casing for mounting on the door in alignment with said arm, a pivoted member on said casing having an inclined lower portion extending outwardly and downwardly of said casing in normal position, said pivoted member having an upper end portion extending at an angle to said lower portion, means abutting said pivoted members upper end portion for normally holding said lower portion in said normal extended position to engage and depress said arm during slamming or forceful closing of the door, said lower portion having an angled lower edge portion for engagingsaid arm at said tapered upper side during rebounding of the door to prevent upward movement thereof, a stop member on said casing having a substantially horizontally extending wall for engaging said arm upon depression thereof thereby stopping forcible closing movement of the door, and said stop member having an inwardly sloping front wall for permitting downward movement of said arm to an inactive position upon slow door closing movement following rebounding thereby permitting closing of the door.

4. A door check comprising a buffer arm, pivot means for pivotally mounting, said arm upon a door jamb in an active substantially horizontally posit-ion, said buffer arm adapted to protrude outwardly from the door jamb in said active position for engaging the door and to swing downwardly to'an inactive substantially vertical position for permitting the door to close, a support for mounting on the door in alignment with said bufier arm, stop means disposed on said support at a lower level than said bufier arm for engaging said buffer arm during downward swinging movement thereof caused by engagement with the door when forcibly moved toward the door jamb, thereby stopping further downward swinging of said buffer arm and preventing forcible closing of the door, a control member mounted for movement on said support at a higher level than said stop means, said control member adapted to engage said buffer arm during forcible closing and rebounding of the door to prevent upward swinging of said buffer arm thereby causing said buffer arm to be swung further downwardly by re-engagement with the door past said step means to said inactive position during slow closing of the door.

5. A door check comprising support means for mounting on a door frame, a check member pivotally mounted on said support means for swinging downwardly from a normal laterally extending position, support means for mounting on a door in alignment with said check member, a flipper pivoted on said door support means for swinging inwardly from a normal outwardly inclined position by said check member during forcible closing of the door whereby said check member is depressed, stop means on said door support means for engaging said check member during forcible closing of the door for stopping movement of the door, and said flipper having means for maintaining said check member in depressed position during rebounding of the door whereby said check member will be further depressed upon re-engagement with the door so as to move downwardly to an inactive position thereby permitting closing of the door.

References Cited in the file of this patent UNITED STATES PATENTS 

